Charging problem 90 XJ
04-14-2005, 09:36 PM
#1
Guest
Posts: n/a
Charging problem 90 XJ
My XJ died due to a no charge condition, battery tested good, alt
tested bad. Replaced alt, ammeter showed no charge so I checked the
fuse links and connections at the.....well I'm not sure what it's
called but it has a stud that all the fuse links bolt to and 4 spade
type connectors, I didn't really do anything to it other than plug and
unplug and clean the connections.After that it started charging showing
14 amps. Well it's not charging again, I went thru the same motions to
no avail. Any ideas?
tested bad. Replaced alt, ammeter showed no charge so I checked the
fuse links and connections at the.....well I'm not sure what it's
called but it has a stud that all the fuse links bolt to and 4 spade
type connectors, I didn't really do anything to it other than plug and
unplug and clean the connections.After that it started charging showing
14 amps. Well it's not charging again, I went thru the same motions to
no avail. Any ideas?
04-14-2005, 10:10 PM
#2
Guest
Posts: n/a
Re: Charging problem 90 XJ
I should add that I charged the battery overnight prior to installing
the new alt. I have checked and cleaned both ends of both battery
cables. The fusible link shows no sign of over heating, and it charged
fine for 3 weeks prior to this problem.
the new alt. I have checked and cleaned both ends of both battery
cables. The fusible link shows no sign of over heating, and it charged
fine for 3 weeks prior to this problem.
04-14-2005, 10:10 PM
#3
Guest
Posts: n/a
Re: Charging problem 90 XJ
I should add that I charged the battery overnight prior to installing
the new alt. I have checked and cleaned both ends of both battery
cables. The fusible link shows no sign of over heating, and it charged
fine for 3 weeks prior to this problem.
the new alt. I have checked and cleaned both ends of both battery
cables. The fusible link shows no sign of over heating, and it charged
fine for 3 weeks prior to this problem.
04-14-2005, 10:10 PM
#4
Guest
Posts: n/a
Re: Charging problem 90 XJ
I should add that I charged the battery overnight prior to installing
the new alt. I have checked and cleaned both ends of both battery
cables. The fusible link shows no sign of over heating, and it charged
fine for 3 weeks prior to this problem.
the new alt. I have checked and cleaned both ends of both battery
cables. The fusible link shows no sign of over heating, and it charged
fine for 3 weeks prior to this problem.
04-14-2005, 10:10 PM
#5
Guest
Posts: n/a
Re: Charging problem 90 XJ
I should add that I charged the battery overnight prior to installing
the new alt. I have checked and cleaned both ends of both battery
cables. The fusible link shows no sign of over heating, and it charged
fine for 3 weeks prior to this problem.
the new alt. I have checked and cleaned both ends of both battery
cables. The fusible link shows no sign of over heating, and it charged
fine for 3 weeks prior to this problem.
04-15-2005, 08:43 AM
#6
Guest
Posts: n/a
Re: Charging problem 90 XJ
I have seen several loose their ground between the alternator bracket
and the engine block so you might want to try a booster cable from the
battery negative to the alternator case to see if it fires up.
If not, try from the batter negative to the firewall, lots of times that
wire mesh ground strap from the head to the firewall rots or breaks.
And that place where all the wires are is called the starter relay. The
bolt post on it is just a convenient connection to bring a mess of wires
together.
Also those fuse links can just up and die with no visible evidence.
They get hard and crystal, then a flex can snap them. You should check
them with a meter on continuity. See if there is a connection from the
relay post to the alternator post.
Then if all else fails, I would hit the alternator with a hammer. If it
fires up, the brushes are worn out and it is time for a kit or a
replacement. I prefer kits.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
JRK58@MSN.COM wrote:
>
> I should add that I charged the battery overnight prior to installing
> the new alt. I have checked and cleaned both ends of both battery
> cables. The fusible link shows no sign of over heating, and it charged
> fine for 3 weeks prior to this problem.
and the engine block so you might want to try a booster cable from the
battery negative to the alternator case to see if it fires up.
If not, try from the batter negative to the firewall, lots of times that
wire mesh ground strap from the head to the firewall rots or breaks.
And that place where all the wires are is called the starter relay. The
bolt post on it is just a convenient connection to bring a mess of wires
together.
Also those fuse links can just up and die with no visible evidence.
They get hard and crystal, then a flex can snap them. You should check
them with a meter on continuity. See if there is a connection from the
relay post to the alternator post.
Then if all else fails, I would hit the alternator with a hammer. If it
fires up, the brushes are worn out and it is time for a kit or a
replacement. I prefer kits.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
JRK58@MSN.COM wrote:
>
> I should add that I charged the battery overnight prior to installing
> the new alt. I have checked and cleaned both ends of both battery
> cables. The fusible link shows no sign of over heating, and it charged
> fine for 3 weeks prior to this problem.
04-15-2005, 08:43 AM
#7
Guest
Posts: n/a
Re: Charging problem 90 XJ
I have seen several loose their ground between the alternator bracket
and the engine block so you might want to try a booster cable from the
battery negative to the alternator case to see if it fires up.
If not, try from the batter negative to the firewall, lots of times that
wire mesh ground strap from the head to the firewall rots or breaks.
And that place where all the wires are is called the starter relay. The
bolt post on it is just a convenient connection to bring a mess of wires
together.
Also those fuse links can just up and die with no visible evidence.
They get hard and crystal, then a flex can snap them. You should check
them with a meter on continuity. See if there is a connection from the
relay post to the alternator post.
Then if all else fails, I would hit the alternator with a hammer. If it
fires up, the brushes are worn out and it is time for a kit or a
replacement. I prefer kits.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
JRK58@MSN.COM wrote:
>
> I should add that I charged the battery overnight prior to installing
> the new alt. I have checked and cleaned both ends of both battery
> cables. The fusible link shows no sign of over heating, and it charged
> fine for 3 weeks prior to this problem.
and the engine block so you might want to try a booster cable from the
battery negative to the alternator case to see if it fires up.
If not, try from the batter negative to the firewall, lots of times that
wire mesh ground strap from the head to the firewall rots or breaks.
And that place where all the wires are is called the starter relay. The
bolt post on it is just a convenient connection to bring a mess of wires
together.
Also those fuse links can just up and die with no visible evidence.
They get hard and crystal, then a flex can snap them. You should check
them with a meter on continuity. See if there is a connection from the
relay post to the alternator post.
Then if all else fails, I would hit the alternator with a hammer. If it
fires up, the brushes are worn out and it is time for a kit or a
replacement. I prefer kits.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
JRK58@MSN.COM wrote:
>
> I should add that I charged the battery overnight prior to installing
> the new alt. I have checked and cleaned both ends of both battery
> cables. The fusible link shows no sign of over heating, and it charged
> fine for 3 weeks prior to this problem.
04-15-2005, 08:43 AM
#8
Guest
Posts: n/a
Re: Charging problem 90 XJ
I have seen several loose their ground between the alternator bracket
and the engine block so you might want to try a booster cable from the
battery negative to the alternator case to see if it fires up.
If not, try from the batter negative to the firewall, lots of times that
wire mesh ground strap from the head to the firewall rots or breaks.
And that place where all the wires are is called the starter relay. The
bolt post on it is just a convenient connection to bring a mess of wires
together.
Also those fuse links can just up and die with no visible evidence.
They get hard and crystal, then a flex can snap them. You should check
them with a meter on continuity. See if there is a connection from the
relay post to the alternator post.
Then if all else fails, I would hit the alternator with a hammer. If it
fires up, the brushes are worn out and it is time for a kit or a
replacement. I prefer kits.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
JRK58@MSN.COM wrote:
>
> I should add that I charged the battery overnight prior to installing
> the new alt. I have checked and cleaned both ends of both battery
> cables. The fusible link shows no sign of over heating, and it charged
> fine for 3 weeks prior to this problem.
and the engine block so you might want to try a booster cable from the
battery negative to the alternator case to see if it fires up.
If not, try from the batter negative to the firewall, lots of times that
wire mesh ground strap from the head to the firewall rots or breaks.
And that place where all the wires are is called the starter relay. The
bolt post on it is just a convenient connection to bring a mess of wires
together.
Also those fuse links can just up and die with no visible evidence.
They get hard and crystal, then a flex can snap them. You should check
them with a meter on continuity. See if there is a connection from the
relay post to the alternator post.
Then if all else fails, I would hit the alternator with a hammer. If it
fires up, the brushes are worn out and it is time for a kit or a
replacement. I prefer kits.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
JRK58@MSN.COM wrote:
>
> I should add that I charged the battery overnight prior to installing
> the new alt. I have checked and cleaned both ends of both battery
> cables. The fusible link shows no sign of over heating, and it charged
> fine for 3 weeks prior to this problem.
04-15-2005, 08:43 AM
#9
Guest
Posts: n/a
Re: Charging problem 90 XJ
I have seen several loose their ground between the alternator bracket
and the engine block so you might want to try a booster cable from the
battery negative to the alternator case to see if it fires up.
If not, try from the batter negative to the firewall, lots of times that
wire mesh ground strap from the head to the firewall rots or breaks.
And that place where all the wires are is called the starter relay. The
bolt post on it is just a convenient connection to bring a mess of wires
together.
Also those fuse links can just up and die with no visible evidence.
They get hard and crystal, then a flex can snap them. You should check
them with a meter on continuity. See if there is a connection from the
relay post to the alternator post.
Then if all else fails, I would hit the alternator with a hammer. If it
fires up, the brushes are worn out and it is time for a kit or a
replacement. I prefer kits.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
JRK58@MSN.COM wrote:
>
> I should add that I charged the battery overnight prior to installing
> the new alt. I have checked and cleaned both ends of both battery
> cables. The fusible link shows no sign of over heating, and it charged
> fine for 3 weeks prior to this problem.
and the engine block so you might want to try a booster cable from the
battery negative to the alternator case to see if it fires up.
If not, try from the batter negative to the firewall, lots of times that
wire mesh ground strap from the head to the firewall rots or breaks.
And that place where all the wires are is called the starter relay. The
bolt post on it is just a convenient connection to bring a mess of wires
together.
Also those fuse links can just up and die with no visible evidence.
They get hard and crystal, then a flex can snap them. You should check
them with a meter on continuity. See if there is a connection from the
relay post to the alternator post.
Then if all else fails, I would hit the alternator with a hammer. If it
fires up, the brushes are worn out and it is time for a kit or a
replacement. I prefer kits.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
JRK58@MSN.COM wrote:
>
> I should add that I charged the battery overnight prior to installing
> the new alt. I have checked and cleaned both ends of both battery
> cables. The fusible link shows no sign of over heating, and it charged
> fine for 3 weeks prior to this problem.
04-15-2005, 09:20 AM
#10
Guest
Posts: n/a
Re: Charging problem 90 XJ
did you replace the alt. with a new or used one? If its a used one the
regulator could be shot (it's internal to the alt.).
Check those wire connections like Mike suggested also double check the
connections on the alt. even do a continuity check on them, I have seen a
broken wire on the small stud (thinks its the field wire??) cause a similar
problem on my XJ.
Have you had the battery tested? a week alt. can cause a battery to
discharge to a state where it will no longer hold a charge.
Snow...
<JRK58@MSN.COM> wrote in message
news:1113528989.972741.163690@o13g2000cwo.googlegr oups.com...
> My XJ died due to a no charge condition, battery tested good, alt
> tested bad. Replaced alt, ammeter showed no charge so I checked the
> fuse links and connections at the.....well I'm not sure what it's
> called but it has a stud that all the fuse links bolt to and 4 spade
> type connectors, I didn't really do anything to it other than plug and
> unplug and clean the connections.After that it started charging showing
> 14 amps. Well it's not charging again, I went thru the same motions to
> no avail. Any ideas?
>
regulator could be shot (it's internal to the alt.).
Check those wire connections like Mike suggested also double check the
connections on the alt. even do a continuity check on them, I have seen a
broken wire on the small stud (thinks its the field wire??) cause a similar
problem on my XJ.
Have you had the battery tested? a week alt. can cause a battery to
discharge to a state where it will no longer hold a charge.
Snow...
<JRK58@MSN.COM> wrote in message
news:1113528989.972741.163690@o13g2000cwo.googlegr oups.com...
> My XJ died due to a no charge condition, battery tested good, alt
> tested bad. Replaced alt, ammeter showed no charge so I checked the
> fuse links and connections at the.....well I'm not sure what it's
> called but it has a stud that all the fuse links bolt to and 4 spade
> type connectors, I didn't really do anything to it other than plug and
> unplug and clean the connections.After that it started charging showing
> 14 amps. Well it's not charging again, I went thru the same motions to
> no avail. Any ideas?
>
